JP5387201B2 - Non-contact power feeding system, non-contact relay device, non-contact power receiving device, and non-contact power feeding method - Google Patents

Non-contact power feeding system, non-contact relay device, non-contact power receiving device, and non-contact power feeding method Download PDF

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JP5387201B2
JP5387201B2 JP2009171797A JP2009171797A JP5387201B2 JP 5387201 B2 JP5387201 B2 JP 5387201B2 JP 2009171797 A JP2009171797 A JP 2009171797A JP 2009171797 A JP2009171797 A JP 2009171797A JP 5387201 B2 JP5387201 B2 JP 5387201B2
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power
non
contact
resonance
relay
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JP2011030317A (en
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浩嗣 和田
健一 藤巻
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ソニー株式会社
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12Inductive energy transfer
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J5/00Circuit arrangements for transfer of electric power between ac networks and dc networks
    • H02J5/005Circuit arrangements for transfer of electric power between ac networks and dc networks with inductive power transfer
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/40Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/022Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters characterised by the type of converter
    • H02J7/025Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters characterised by the type of converter using non-contact coupling, e.g. inductive, capacitive
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage for electromobility
    • Y02T10/7005Batteries
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage for electromobility
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies related to electric vehicle charging
    • Y02T90/12Electric charging stations
    • Y02T90/122Electric charging stations by inductive energy transmission
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies related to electric vehicle charging
    • Y02T90/14Plug-in electric vehicles

Description

  The present invention relates to a non-contact power supply system that supplies power using a resonance phenomenon such as magnetic field resonance or electric field resonance, a device used in the system, a non-contact power supply method used in the system, or the device.

  As a technique for enabling electric energy to be transmitted in a non-contact manner, there are an electromagnetic induction method, a magnetic field resonance method, and the like. There are various differences as described below between the electromagnetic induction method and the magnetic field resonance method, and in recent years, energy transmission using the magnetic field resonance method has attracted attention.

  FIG. 11 is a block diagram illustrating a configuration example of a magnetic resonance type non-contact power supply system in which a power supply source and a power supply destination correspond one-to-one. The magnetic resonance type non-contact power supply system shown in FIG. 11 includes a power supply source 100 and a power supply destination 200.

  As shown in FIG. 11, for example, a power supply source 100 that is a charging stand includes an AC power supply 100, an excitation element (coupling element) 102, and a resonance element 103. In addition, for example, a power supply destination 200 such as a mobile phone terminal includes a resonance element 201, an excitation element (coupling element) 202, and a rectifier circuit 203.

  The excitation element 102 and the resonance element 103 of the power supply source 100 and the resonance element 201 and the excitation element 202 of the power supply destination 200 are all configured by air-core coils. In the power supply source 100, the excitation element 102 and the resonance element 103 are strongly coupled by electromagnetic induction. Similarly, in the power supply destination 200, the resonance element 201 and the excitation element 202 are strongly coupled by electromagnetic induction.

  When the resonance element (air-core coil) 201 of the power supply source 100 and the resonance element (air-core coil) 201 of the power supply destination 200 coincide with each other, the magnetic resonance relationship is established, and the coupling amount Is the largest and the loss is the smallest.

  That is, in the non-contact power feeding system shown in FIG. 11, first, the power source 100 supplies AC power (energy such as AC current) of a predetermined frequency from the AC power source 101 to the excitation element 102, which is generated by electromagnetic induction. AC power is induced in the resonance element 103. Here, the frequency of the AC power generated in the AC power supply 101 is set to be the same as the self-resonance frequency of the resonance element 103 of the supply source 100 and the resonance element 201 of the supply destination 200.

  As described above, the resonance element 103 of the power supply source 100 and the resonance element 201 of the power supply destination 200 are arranged in a magnetic resonance relationship. For this reason, AC power (energy such as AC current) is supplied in a non-contact manner from the resonance element 103 to the resonance element 201 at the resonance frequency (resonance frequency).

  In the power supply destination 200, the AC power from the resonance element 103 as the power supply source is received by the resonance element 201. The AC power from the resonance element 201 is supplied to the rectifier circuit through the excitation element 2 by electromagnetic induction, where it is converted into DC power and output.

  In this way, AC power is supplied from the power supply source 100 to the power supply destination 200 in a contactless manner. Note that the DC power output from the rectifier circuit 203 is supplied to, for example, a charging circuit to which a battery is connected, and is used for charging the battery.

  The non-contact power feeding system in which the power supply source 100 and the power supply destination 200 configured as illustrated in FIG. 11 correspond one-to-one has the following characteristics.

  The non-contact power supply system has a relationship between the frequency of the AC power source and the coupling amount as shown in FIG. As can be seen from FIG. 12A, the amount of coupling does not increase even when the frequency of the AC power supply is low or conversely high, and the amount of coupling is only at a specific frequency that causes a magnetic resonance phenomenon. Maximum. That is, it can be seen that the magnetic field resonance exhibits frequency selectivity.

  Further, the non-contact power feeding system has a relationship between the distance between the resonant elements 103 and 201 and the coupling amount as shown in FIG. As can be seen from FIG. 12B, the amount of coupling decreases as the distance between the resonant elements increases.

  However, the amount of coupling does not increase just because the distance between the resonant elements is short, and there is a distance at which the amount of coupling is maximum at a certain resonance frequency. FIG. 12B also shows that a certain amount of coupling can be secured if the distance between the resonant elements is within a certain range.

  Further, the non-contact power supply system has a relationship between the resonance frequency and the distance between the resonance elements that provides the maximum coupling amount as shown in FIG. That is, it can be seen that the resonance element interval is wide when the resonance frequency is low. It can also be seen that when the resonance frequency is high, the maximum amount of coupling can be obtained by narrowing the interval between the resonance elements.

  In the electromagnetic contact type non-contact power supply system that is already widely used, it is necessary to share the magnetic flux between the power supply source and the power supply destination, and in order to send power efficiently, the power supply source and the power supply destination are in close proximity. The alignment of the coupling is also important.

  On the other hand, in the non-contact power feeding system using the magnetic field resonance phenomenon, as described above, it is possible to transmit electric power at a greater distance than the electromagnetic induction method due to the principle of the magnetic field resonance phenomenon. However, there is an advantage that the transmission efficiency does not decrease so much.

  Summarizing the above, as shown in FIG. 13, there is a difference between a magnetic resonance type non-contact power feeding system and an electromagnetic induction type non-contact power feeding system. As shown in FIG. 13, in the case of a magnetic resonance type non-contact power feeding system, the transmission distance can be increased and the transmission distance (resonance element) is strong.

  For this reason, in the case of a magnetic resonance type non-contact power feeding system, as shown in FIG. 14, charging is performed by placing a plurality of power feeding destinations (mobile terminals) on one power feeding source (charging base). Can be done.

  Patent Document 1 described later discloses a technique related to a power transmission system using the magnetic resonance method as described above.

US Patent Application Publication No. 2007/0222542

  By the way, for example, in the case of the magnetic field resonance type power supply technology, as described above, the transmission distance is longer and the transmission / reception coil shift is stronger than the conventional electromagnetic induction method. It is possible to intervene with a lot of flexibility.

  For this reason, in the case of the magnetic field resonance type power supply technology, not only the power is supplied from the power supply source to the power supply destination, but also a new power supply mode and a new power supply in the new power supply mode. There is a high possibility of creating usage patterns. This can be said not only for the magnetic field resonance type non-contact power supply system but also for other resonance type non-contact power supply systems.

  In view of the above points, an object of the present invention is to provide a new supply mode of power using a resonance-type power supply technique and a new use mode of power in the new supply mode.

In order to solve the above problem, a non-contact power feeding system according to claim 1 is provided by:
A power supply resonance element for supplying AC power to an electronic device in a contactless manner by resonance;
An AC power supply unit that generates AC power having a frequency corresponding to a resonance frequency of the resonance element for power supply and supplies the AC power to the resonance element for power supply;
A relay resonance element that receives supply of AC power in a contactless manner by resonance from the resonance element of the contactless power feeding device, and relays the AC power to other electronic devices in a contactless manner by resonance;
A relay-side rectifier circuit that forms and outputs DC power from AC power from the relay excitation element;
A non-contact relay device that is driven by DC power from the relay-side rectifier circuit and includes a moving means that moves the own device;
A power receiving resonant element that is supplied with AC power in a non-contact manner by magnetic field resonance from the relay resonant element of the non-contact relay device;
A power receiving side rectifier circuit that forms and outputs DC power from AC power from the power receiving resonant element;
And one or more non-contact power receiving devices including load means driven by DC power from the power receiving side rectifier circuit.

  According to the contactless power supply system of the first aspect of the present invention, in the contactless power supply apparatus, AC power from the AC power supply is transmitted in a contactless manner through the power supply resonance element.

  In the non-contact relay device, AC power from the non-contact power feeding device is received through the relay resonance element, and is supplied to the moving means through the relay-side rectifier circuit so that the non-contact relay device moves. The At the same time, the AC power received through the relay resonance element is transmitted to another electronic device (non-contact power receiving device) through the relay resonance element.

  That is, the non-contact relay device has a function of relaying the AC power from the non-contact power feeding device to other electronic devices (non-contact power receiving device) while moving by the AC power from the non-contact power feeding device.

  In the one or more contactless power receiving devices, AC power from the moving contactless relay device is received through the power receiving resonance element, and this is supplied to the load circuit through the power receiving side rectifier circuit, and the load circuit is driven. To be done.

  As a result, AC power (energy such as AC current) from the non-contact power supply device can be supplied to the non-contact relay device in a non-contact manner, and the non-contact relay device can be moved. Then, AC power (energy such as AC current) can be relayed and supplied to one or more non-contact power receiving apparatuses through the moving non-contact relay apparatus.

  In this way, AC power is supplied to one or more target non-contact power receiving devices via the moving non-contact relay device, and the load means is operated in the one or more non-contact power receiving devices. be able to.

  Thus, not only power is supplied in a non-contact manner, but also the moving contactless relay device is used as a relay to supply power to one or more non-contact power receiving devices, and the load means is provided in each non-contact power receiving device. Can be driven.

  That is, by interposing a moving non-contact power receiving relay device, for example, a new supply mode of power using a so-called resonance-type power supply technology such as a magnetic field resonance method, and a new use of power in the new supply mode An aspect can be provided.

  According to the present invention, it is possible to realize a new supply mode of power using a resonance-type power supply technique and a new use mode of power in the new supply mode.

It is a figure for demonstrating the structural example of the non-contact electric power feeding system of the magnetic field resonance system of 1st Embodiment. It is a figure for demonstrating the external appearance of the non-contact electric power feeding system of 1st Embodiment. It is a figure for demonstrating the structural example of the moving body 2 of the non-contact electric power feeding system of 1st Embodiment. It is a figure for demonstrating the example of a structure of the electric power feeding destination (electric decoration body) 3 of 1st Embodiment. It is a figure for demonstrating the non-contact electric power feeding system of 2nd Embodiment. It is a figure for demonstrating the utilization aspect of the non-contact electric power feeding system of 2nd Embodiment. It is a figure for demonstrating the structural example of the electric power feeding source 1 of 2nd Embodiment. It is a figure for demonstrating the structural example of 2 A of mobile bodies of 2nd Embodiment. It is a figure for demonstrating the structural example of the electric power feeding destination 3 of 2nd Embodiment. FIG. 6 is a diagram illustrating an equation for obtaining a resonance frequency fr of the resonance element 13. It is a figure for demonstrating the prior art example of a magnetic resonance type non-contact electric power feeding system. It is a figure for demonstrating the characteristic of a magnetic resonance type non-contact electric power feeding system. It is a figure which shows the comparison result of a magnetic field resonance type non-contact electric power feeding system and an electromagnetic induction type non-contact electric power feeding system. It is a figure for demonstrating the specific example of a magnetic resonance type non-contact electric power feeding system.

  Hereinafter, an embodiment of an apparatus and a method according to the present invention will be described with reference to the drawings. The present invention can be applied to various resonance methods such as a magnetic field resonance method, an electric field resonance method, an electromagnetic resonance method, and the like. In the following, the case where the magnetic field resonance method is used will be described as an example.

[First Embodiment]
[Outline of wireless power supply system of the first embodiment]
FIG. 1 is a diagram for explaining a configuration example of a magnetic resonance type non-contact power feeding system according to a first embodiment. As shown in FIG. 1, the contactless power feeding system of this embodiment includes a power feeding source 1, a moving body 2, and a power feeding destination 3. Although details will be described later, a plurality of power supply destinations configured in the same manner can be used.

  The power supply source 1 uses a magnetic field resonance method to supply electric power to other electronic devices in a non-contact manner, and realizes a function as a non-contact power supply device.

  In addition, the mobile unit 2 has a function as a relay device that receives power from the power supply source 1 and supplies the power to other electronic devices, and a function that uses the power also for driving the drive motor of the own device. It is provided and realizes a function as a non-contact relay device.

  Further, in this embodiment, the power supply destination 3 is supplied with power from the power supply source 1 via the moving body 2 and uses this for driving the load circuit of the own device. The function is realized.

  As shown in FIG. 1, the power supply source 1 includes an AC power supply 11, a coupling coil (coupling element (excitation element)) 12, and a power transmission resonance coil (resonance element) 13.

  As shown in FIG. 1, the moving body 2 includes a relay resonance coil (resonance element) 21 that receives power (AC power) from the power supply source 1 and transmits the power to the power supply destination 3. Although not shown in FIG. 1, the moving body 2 includes a coupling coil (coupling element (excitation element)), a rectifier circuit, a drive motor, and the like. It also has a configuration used for driving the drive motor of the machine.

  As illustrated in FIG. 1, the power supply destination 3 includes a power receiving resonance coil (resonance element) 31, a coupling coil (coupling element (excitation element)) 32, a rectifier circuit 33, and a load circuit 34. In addition, although mentioned later in detail, the load circuit 34 of the electric power feeding destination 3 consists of LED (Light Emitting Diode), an LED driver, etc.

  The coupling coil 12 and the power transmission resonance coil 13 of the power supply source 1, the relay resonance coil 21 and the coupling coil (not shown) of the moving body 2, and the power reception resonance coil 31 and the coupling coil 32 of the power supply destination 3 are so-called air-core coils. It is said that.

  Then, the AC power source 11 of the supplier 1 generates AC power (energy such as an AC current) having the same or substantially the same frequency as the self-resonant frequency (self-resonant frequency) of the power transmission resonance coil 13 of the supplier 1. This is supplied to the excitation element 12.

  Note that the relay resonance coil 21 of the mobile body 2 and the power reception resonance coil 31 of the supply destination 3 also have the same or substantially the same self resonance frequency (self resonance frequency) as the power transmission resonance coil 13 of the power supply source 1. It is what you have.

  That is, in the magnetic field resonance type non-contact power feeding system shown in FIG. 1, each of the power transmission resonance coil 13 of the supply source 1, the relay resonance coil 21 of the moving body 2, and the power reception resonance coil 31 of the supply destination 3 is They have the same or substantially the same resonance frequency (resonance frequency).

  Further, the AC power source 11 of the supplier 1 includes, for example, a Colpitts-type oscillation circuit, a Hartley-type oscillation circuit, and the like in order to generate AC power having a target frequency.

  The coupling coil 12 is an element that supplies AC power to the power transmission resonance coil 13 by being excited by AC power from the AC power supply 11. The coupling coil 12 that receives the supply of AC power from the AC power supply 11 and the power transmission resonance coil 13 are strongly coupled by electromagnetic induction. For this reason, AC power from the AC power source 11 is supplied to the power transmission resonance coil 13 via the coupling coil 12.

  The coupling coil 12 also plays a role of preventing reflection of an electric signal by matching the impedance between the AC power supply 11 and the power transmission resonance coil 13. That is, normally, an unmodulated sine wave having a center frequency f0 is used in a magnetic resonance type non-contact power feeding system. Since this unmodulated sine wave is unmodulated, the occupied frequency bandwidth is narrow (ideally 0 (zero) Hz).

  Therefore, the frequency band necessary for the resonance coil for transmitting the unmodulated sine wave may be as narrow as about several Hz, but in order to increase the transmission efficiency, it is required that the loss is low (“Q” is high). Here, the value “Q” represents the sharpness of the resonance peak of the resonance circuit. If the resonance peak becomes sharp, the transmission efficiency of electric power (AC power) can be increased.

  That is, in the magnetic field resonance type non-contact power transmission, in order to obtain high transmission efficiency, it is desirable to increase the Q value as much as possible in the power transmission resonance coil 13 of the power supply source 1 and the power reception resonance coil 31 of the power supply destination 3. .

  However, if the resonance coil 13 is directly connected to the AC power source 11 at the power supply source 1 or the resonance coil 31 is directly connected to the rectifier circuit 33 at the power supply destination 3, the resonance coil 13 and the resonance are affected by the influence of the circuit impedance. The Q value of the coil 31 is lowered.

  In order to avoid this, the power supply source 1 uses the coupling coil 12 to avoid direct connection of the power transmission resonance coil 13 to the AC power supply 11, thereby keeping the impedance of the power transmission resonance coil 13 high, The Q value of the power transmission resonance coil 13 is kept high.

  The power transmission resonance coil 13 generates a magnetic field by the AC power supplied from the coupling coil 12. The power transmission resonance coil 13 has an inductance and a capacitance. The power transmission resonance coil 13 has the highest magnetic field strength at the resonance frequency.

  FIG. 10 is a diagram illustrating an equation for obtaining the resonance frequency fr of the power transmission resonance coil 13. In Expression (1) shown in FIG. 10, the letter L is the inductance of the power transmission resonance coil 13, and the letter C is the capacitance of the power transmission resonance coil 13.

  Therefore, the resonance frequency of the power transmission resonance coil 13 is determined by the inductance L and the capacitance C of the power transmission resonance coil 13. As described above, since the power transmission resonance coil 13 is formed of an air-core coil, the line capacitance of the power transmission resonance coil 13 plays a role as a capacitance. The power transmission resonance coil 13 generates a magnetic field in the axial direction of the coil.

  The relay resonance coil 21 of the moving body 2 is an element for receiving supply of AC power from the supply source 1 by magnetic field coupling by magnetic field resonance. The relay resonance coil 21 of the moving body 2 has an inductance L and a capacitance C similarly to the power reception resonance coil 13 of the power supply source 1 described using the equation (1) in FIG. It has the same or substantially the same resonance frequency as the coil 13.

  As described above, since the relay resonance coil 21 of the moving body 2 is configured as an air-core coil, the line-to-line capacitance serves as a capacitance. As shown in FIG. 1, the relay resonance coil 21 of the moving body 2 is connected to the power transmission resonance coil 13 of the supply source 1 by magnetic field resonance.

  As a result, at the resonance frequency (resonance frequency), AC power (energy such as AC current) is non-contacted by magnetic field resonance from the power transmission resonance coil 13 of the power supply source 1 to the relay resonance coil 21 of the moving body 2. Supplied.

  Further, the relay resonance coil 21 of the moving body 2 is also connected to the power reception resonance coil 31 of the power supply destination 3 by magnetic field coupling by magnetic field resonance.

  That is, the power receiving resonance coil 31 of the supply destination 3 is an element for receiving supply of AC power from the supply source 1 relayed by the moving body 2 by magnetic field coupling by magnetic field resonance. The power receiving resonance coil 31 of the supply destination 3 has an inductance L and a capacitance C similarly to the power transmission resonance coil 13 of the power supply source 1 described using the equation (1) in FIG. The resonance coil 13 has the same or substantially the same resonance frequency.

  And as above-mentioned, since the receiving resonance coil 31 of the supply destination 3 is set as the structure of an air core coil, the capacity | capacitance between lines plays a role as a capacitance. As shown in FIG. 1, the power receiving resonance coil 31 of the supply destination 3 is connected to the relay resonance coil 21 of the moving body 2 by magnetic field resonance.

  Thereby, at the resonance frequency (resonance frequency), AC power (energy such as AC current) is supplied from the relay resonance coil 21 of the moving body 2 to the power receiving resonance coil 31 of the power supply destination 3 in a non-contact manner by magnetic field resonance. Is done.

  As described above, at the supply destination 3, the power reception resonance coil 31 and the coupling coil 32 are coupled by electromagnetic induction, and AC power is supplied from the power reception resonance coil 31 to the rectifier circuit 33 through the coupling coil 32.

  Note that the coupling coil 32 of the supply destination 3 serves to prevent reflection of an electric signal by matching the impedance between the power receiving resonance coil 31 and the rectifier circuit 33, as with the coupling coil 12 of the power supply source 1. Also fulfills.

  That is, as in the case of the coupling coil 12 of the power supply source 1, the power supply destination 3 uses the coupling coil 32 to avoid direct connection of the power reception resonance coil 31 to the rectifier circuit 33. Thereby, the impedance of the power receiving resonance coil 31 is kept high, and the Q value of the power receiving resonance coil 31 is kept high.

  The rectifier circuit 33 forms DC power to be supplied to the subsequent load circuit 34 from the AC power supplied through the coupling coil 32, and supplies this to the load circuit 34. As described above and in detail later, the load circuit 34 includes an LED drive and an LED, and receives the supply of DC power to cause the LED to emit light.

  Although described later in detail, the moving body 2 also includes a coupling coil, a rectifier circuit, a drive motor as a load circuit, and the like. For this reason, the mobile unit 2 not only relays the power supplied from the power supply source 1 to the power supply destination 3, but also drives the drive motor of the own device with the power supplied from the power supply source 1. Also used for.

[Appearance of wireless power supply system of first embodiment]
FIG. 2 is a diagram for explaining the appearance of the contactless power feeding system according to the first embodiment. In the case of the first embodiment, for example, the movable body (circular vehicle) 2 is formed on the upper side of the mounting table 4 having a side of about several tens of centimeters to guide the traveling of the movable body 2. A circular guide plate 5 and a plurality of power feeding bodies (electric decoration bodies) 3 (1) to 3 (8) are provided. A power supply source 1 that supplies power to the moving body 2 is provided below the mounting table 4.

  The size of the power transmission resonance coil 13 of the power supply source 1 and the positional relationship between the power transmission resonance coil 13 and the mobile body 2 and the power supply destination 3 are such that the power supply source 1 can supply power only to the mobile body 2. Set (determined).

  In addition, the moving body 2 receives power supplied from the power supply source 1, uses the power to drive the drive motor of the own device, and moves the own device. And the mobile body 2 relays the electric power from the electric power feeding source 1 with respect to the electric power feeding destination 3 which will adjoin, when an own machine moves among electric power feeding destinations 3 (1) -3 (8).

  In this case, the mobile unit 2 cannot relay power to all of the power supply destinations 3 (1) to 3 (8) at the same time. Only the power source 3 can relay power from the power supply source 1.

  Therefore, the moving body 2 drives the drive motor with electric power supplied from the power supply source 1 in a non-contact manner, and moves around the circular guide plate 5 on the mounting table 4. At the same time, the mobile unit 2 relays the power supplied from the power supply source 1 in a contactless manner, and only to the power supply destination 3 located nearby among the power supply destinations 3 (1) to 3 (8). Electric power is supplied so that the LED of the power supply destination 3 can emit light.

  That is, power is strongly supplied only to the power supply destination (electric decoration body) 3 that the mobile body 2 approaches. As a result, the LEDs of the power supply destinations 3 (1) to 3 (8) arranged around the circular guide plate 5 sequentially emit light as the moving body 2 moves around along the circular guide plate 5. Is done.

[Configuration Example of Moving Body (Round Car) 2]
Next, a configuration example of the moving body (circular vehicle) 2 of the non-contact power feeding system according to the first embodiment will be described. FIG. 3 is a diagram for explaining a configuration example of the moving body 2 of the non-contact power feeding system according to the first embodiment.

  As shown in FIG. 3, the moving body 2 is of an automobile type and includes a relay resonance coil 21, a coupling coil 22, a rectifier circuit 23, and a drive motor unit 24, and the drive motor unit 24 rotates the drive motor. It is configured to be transmitted to the drive wheel of the moving body 2.

  As described above, the relay resonance coil 21 receives power (alternating current power) from the power transmission resonance coil 13 of the power supply source 1 coupled by magnetic field resonance, and a part of the relay resonance coil 21 is coupled to the coupling coil 12. To the rectifier circuit 23.

  The rectifier circuit 23 forms DC power from the AC power supplied thereto, and supplies this to the drive motor unit 24. The drive motor unit 24 rotationally drives the drive motor with DC power supplied thereto, and transmits the rotation to the drive wheels.

  As a result, the driving wheel of the moving body 2 rotates, and as described with reference to FIG. 2, the moving wheel 2 makes a circular movement (circular traveling) along the circular guide plate 5 on the mounting table 4.

  The relay resonance coil 21 of the mobile body 2 is also coupled to the power reception resonance coil 31 of the power supply destination 3 by magnetic field resonance, and the mobile body 2 moves a part of the power from the power supply source 1. As a result, the power is sequentially relayed (supplied) to each of the neighboring power supply destinations 3 (1) to 3 (8).

  As described above, the mobile unit 2 uses the power from the power supply source 1 to move its own device, and functions as a mobile repeater (mobile repeater) that relays it to a nearby power supply destination 3.

[Configuration example of power supply destination (electric decoration) 3]
Next, the structural example of the electric power feeding destination (electric decoration body) 3 of the non-contact electric power feeding system of 1st Embodiment is demonstrated. In addition, as demonstrated using FIG. 2, although several electric power feeding destination 3 (1) -3 (8) is used, they have the same structure. For this reason, in the following, each configuration of the plurality of power supply destinations 3 (1) to 3 (8) will be described as the configuration of the power supply destination 3.

  FIG. 4 is a diagram for explaining a configuration example of the power supply destination (electric decoration body) 3 according to the first embodiment. As illustrated in FIG. 4, the power supply destination 3 includes a circuit storage unit 30 </ b> A and an electrical decoration arrangement unit (tree unit) 30 </ b> B.

  As shown in FIG. 4, an LED drive circuit 341 is provided as a part of the power receiving resonance coil 31, the coupling coil 32, the rectifier circuit 33, and the load circuit 34 in the circuit housing portion 30 </ b> A. In addition, a plurality of LEDs 342 (1), 342 (2), 342 (3),... Are provided as part of the load circuit 34 in the electrical decoration arranging unit 30 </ b> B.

  As described above, the power receiving resonance coil 31 is supplied with electric power (AC power) from the power supply source 1 via the relay resonance coil 21 of the moving body 2 coupled by magnetic field resonance. Is supplied to the rectifier circuit 33 through the coupling coil 32.

  The rectifier circuit 33 forms DC power from the AC power supplied thereto, and supplies this to the LED drive circuit 341. The LED drive circuit 341 generates drive currents for the LEDs 342 (1), 342 (2), 342 (3),... From the DC power supplied thereto, and this is used as the EDs 342 (1), 342 (2 ), 342 (3),...

  Thereby, when the power supply destination (electric decoration body) 3 receives supply of electric power from the power supply source 1 through the moving body 2, each LED (1), 342 (2), which is arranged in the electric decoration arrangement unit 30B, 342 (3),... Can emit light.

  As described above, the contactless power feeding system according to the first embodiment includes the power feeding source 1, the moving body 2, and the power feeding destination 3. However, without connecting each of them with a wire, Electric power can be supplied to the mobile body 2 and each of the plurality of power supply destinations 3.

[Effect of the first embodiment]
As described above, in the non-contact power supply system according to the first embodiment, it is not necessary to connect each of the power supply source 1, the moving body 2, and the plurality of power supply destinations 3 (1) to 3 (8) with wires. Therefore, the devices constituting the system can be flexibly arranged.

  For example, by configuring the mounting table 4 shown in FIG. 2 with a transparent acrylic plate or the like, the mobile body 2 and the power supply destinations 3 (1) to 3 (8) are separated from the power supply source 1 and floated. It can be arranged in a state.

  Moreover, when an electrical ornament is used as a power supply destination as described above, the electrical ornament can be made to emit light sequentially with a very simple configuration. That is, there is no need to perform complicated microcomputer control or the like, and the light emission control of the electric decorations can be performed sequentially.

  Moreover, in the non-contact electric power feeding system of 1st Embodiment mentioned above, although the electrical decoration body was used as the electric power feeding destination 3, if a thing which operates mechanically with electric power instead of an electrical decoration body is arrange | positioned, there will be no wiring With this, mechanical operations can be sequentially performed.

  For example, each time the moving body 2 approaches, the motor is driven to rotate to lift the object, or each time the moving body 2 approaches, the shutter is opened to take a picture. The thing of the structure of can be used.

  Further, in the case of the contactless power supply system of the first embodiment described above, the power supply destination 3 is an electrical ornament, and one of its purposes is to collect human eyes. This can increase the effect.

  In addition, power can be transmitted and received between the devices without contact, and there is no need for wiring as in the prior art, installation is easy, and there are advantages that there is no failure due to incorrect wiring or the like.

  As described above, in the case of the contactless power supply system according to the first embodiment, the mobile body 2 is used as a power relay device, so that it can be visually enjoyed without any complicated wiring. A power supply system can be formed.

  And the non-contact electric power feeding system of this 1st Embodiment can be utilized for the display etc. in various stores other than the toy for children, for example.

[Second Embodiment]
[Outline of contactless power feeding system of the second embodiment]
The contactless power feeding system of the first embodiment described above is a relatively small one that can be configured on a table, for example. On the other hand, the non-contact electric power feeding system of this 2nd Embodiment is formed as one of the attractions of a theme park, for example, and can move a human body on a moving body.

  FIG. 5 is a diagram for explaining the non-contact power feeding system of the second embodiment. As shown in FIG. 5, the non-contact power feeding system of the second embodiment has a configuration of a passenger car with a plurality of power feeding sources 1 (1), 1 (2), 1 (3),. The mobile body 2A and a plurality of power supply destinations 3 (1), 3 (2), 3 (3),...

  Each of the plurality of power supply sources 1 (1), 1 (2), 1 (3),... Realizes a function as a non-contact power supply device. In addition, the moving body 2A realizes a function as a non-contact relay device. Each of the plurality of power supply destinations 3 (1), 3 (2), 3 (3),... Realizes a function as a non-contact power receiving apparatus.

  Each of the plurality of power supply sources 1 (1), 1 (2), 1 (3),... Is spaced from the travel path on which the mobile body 2A travels so that power can be supplied to the mobile body 2A. To be placed. Each of the power supply sources 1 (1), 1 (2), 1 (3),... Supplies power sufficient to reach the next power supply source to the moving body 2A. ), 3 (2), 3 (3),... Are arranged at positions where power cannot be directly supplied.

  In other words, the power supply sources 1 (1), 1 (2), 1 (3),... Are supplied from the power supply sources 1 (1), 1 (2), 1 (3),. It is arranged at a position where the mobile body 2 </ b> A is reachable by the electric power to be supplied and cannot be directly supplied to the power supply destination 3.

  The basic configurations of the power supply sources 1 (1), 1 (2), 1 (3),... Are the same as those of the power supply source 1 of the first embodiment shown in FIG. ing. For example, the power supply source 1 (1) includes an AC power supply 11 (1), a coupling coil 12 (1), and a power transmission resonance coil 13 (1). Each of the power supply sources 1 (2), 1 (3),... Includes an AC power supply 11, a coupling coil 12, and a power transmission resonance coil 13.

  The basic structure of the moving body 2A is the same as that of the first moving body 2 shown in FIG. That is, as will be described later, the moving body 2A includes a relay resonance coil 21, a coupling coil 22, a rectifier circuit 23, and a drive motor unit 24.

  Each of the power supply destinations 3 (1), 3 (2), 3 (3),... Is basically the same as the power supply destination 3 of the first embodiment shown in FIG. It is supposed to be configured. In other words, the power receiving resonance coil 31, the coupling coil 32, the rectifier circuit 33, and the load circuit 34 are provided.

  As described above, the power supply sources 1 (1), 1 (2), 1 (3),... Are respectively the power supply destinations 3 (1), 3 (2), 3 (3),. Is arranged at a position where power cannot be directly supplied.

  In other words, each of the power supply destinations 3 (1), 3 (2), 3 (3),... Receives power from each of the power supply sources 1 (1), 1 (2), 1 (3),. Although it is a position where it cannot be received, it is arranged at a position where power can be received through the moving body 2A.

  The load circuit 34 of the power supply destination 3 of the first embodiment is the LED drive circuit 342 and the plurality of LEDs 342 (1),..., Whereas the power supply destination 3 of the second embodiment ( The load circuit 34 such as 1) is composed of an electric bulletin board and its drive circuit.

  Then, for example, about two people are placed on the moving body 2A, and power is sequentially supplied from the power supply sources 1 (1), 1 (2), 1 (3),. Is driven to travel on a travel path on which power supply sources 1 (1), 1 (2), 1 (3),.

  At this time, the moving body 2A uses the power supplied from the power supply sources 1 (1), 1 (2), 1 (3),... To the neighboring power supply destinations 3 (1), 3 (2), 3 (3 ,... Are sequentially supplied to display messages on the electric bulletin boards of the power supply destinations 3 (1), 3 (2), 3 (3),.

  In this case, the messages displayed on the electric bulletin boards of the power supply destinations 3 (1), 3 (2), 3 (3),... Are various advertisement information.

[Usage aspect of the non-contact power feeding system of the second embodiment]
FIG. 6 is a diagram for explaining a usage mode of the non-contact power feeding system according to the second embodiment.

  As shown in FIG. 6, the moving body 2 </ b> A carries a user (human) and sequentially receives power from the power supply sources 1 (1), 1 (2),. While traveling, the power from the power supply source 1 is supplied to power supply destinations 3 (1), 3 (2), 3 (3),.

  Each of the power supply destinations 3 (1), 3 (2), 3 (3), etc., to which power is supplied from the mobile unit 2 A, displays a predetermined message on its own electronic bulletin board.

  In the case of the example illustrated in FIG. 6, the moving body 2A that has received power supply from the power supply source 1 (1) relays power to the adjacent power supply destination 3 (1). As a result, an advertising message “Character Goods Sale at XX Shop” is displayed on the electric bulletin board of the power supply destination 3 (1).

  Then, when the mobile body 2A travels with the power from the power supply source 1 (1) and reaches the power supply source 1 (2), the mobile body 2A receives power supply from the power supply source 1 (2) and drives its own device. The power is relayed from the power supply source 1 (2) to the adjacent power supply destination 3 (2). As a result, an advertisement message “ΔΔ Attraction now, no waiting time” is displayed on the electric bulletin board of the power supply destination 3 (2).

  The messages displayed on the electric bulletin boards of the power supply destinations 3 (1), 3 (2), 3 (3),..., For example, are distributed in advance from the center side by wire or wirelessly. Can do.

  In this way, the moving body 2A, which is a riding automatic person carrying a human, is moved by supplying power from the power supply sources 1 (1), 1 (2), 1 (3),. However, the power is relayed from the power supply source to the power supply destinations 3 (1), 3 (2), 3 (3),.

  And a display message can be displayed and provided on a nearby electronic bulletin board in a timely manner to a user who is on the moving body 2A. As a result, users can obtain the latest information and use it as a reference for the next action, etc., and information providers can guide users to stores and other attractions. Will be able to.

  In the second embodiment described above, display messages to be displayed on the electric bulletin boards of the power supply destinations 3 (1), 3 (2), 3 (3),... Are distributed from a predetermined center, for example. It was explained as something to keep. However, it is not limited to this.

  For example, in the case of the contactless power supply system according to the second embodiment, a display message to be displayed on the electric bulletin board of the power supply destination 3 is relayed from the power supply source 1 to the mobile body 2A using a noncontact power supply path. Can be supplied to the power supply destination 3.

  In the following description, the display message displayed on the electric bulletin board of the power supply destination 3 uses the non-contact power supply path to relay the mobile body 2A from the power supply source 1 and supplies it to the power supply destination 3. A configuration example of the mobile body 2A and the power supply destination 3 will be described.

  As described above, since each of the power supply sources 1 (1), 1 (2), 1 (3),... Has the same configuration, the power supply source 1 (1) will be described below. 1 (2), 1 (3),... Will be described as the configuration of the power supply source 1.

  Similarly, since each of the power supply destinations 3 (1), 3 (2), 3 (3),... Has the same configuration, the power supply destinations 3 (1), 3 (2) will be described below. 3 (3),... Will be described as the configuration of the power supply destination 3.

[Configuration example of power supply source 1]
First, a configuration example of the power supply source 1 will be described. FIG. 7 is a diagram for explaining a configuration example of the power supply source 1 according to the second embodiment. The power supply source 1 of the second embodiment not only supplies power but also transmits a display message.

  As shown in FIG. 7, the power supply source 1 in this example includes a communication unit 14 in addition to the AC power supply 11, the coupling coil 12, and the power reception resonance coil 13. The communication unit 14 is connected to the power transmission resonance coil 13 so that the power transmission resonance coil 13 can also be used as a communication antenna.

  If the communication unit 14 and the power transmission resonance coil 13 are simply connected, the impedance of the power transmission resonance coil 13 is lowered, the Q value of the power transmission resonance coil 13 is lowered, and the power supply efficiency is lowered. .

  Therefore, in the power supply source 1 of the second embodiment, a filter circuit 15a is provided between the AC power supply 11 and the coupling coil 12, and a filter circuit 15b is provided between the communication unit 14 and the power transmission resonance coil 13. Is provided.

  That is, as described above, the frequency band necessary for power transmission is as low as several Hz to several tens Hz, for example. On the other hand, the frequency band necessary for information transmission requires a wider frequency band as information is transmitted at a higher speed, which requires several kHz or more at the lowest, and sometimes requires several MHz to several GHz.

  In the second embodiment, the frequency f1 of the AC power generated by the AC power supply 11 is a value around 10 Hz, for example, and the frequency of the information transmission signal generated by the communication unit 14 is several MHz or more. Suppose there is.

  In this case, the filter circuit 15b of the power supply source 1 is designed to have a sufficiently high impedance so as not to decrease the Q value of the power transmission resonance coil 13 at the frequency f1. The filter circuit 15a of the power supply source 1 is designed so as to have an appropriate impedance at the frequency f2 so that the coupling coil 12 does not affect wireless communication. Here, the appropriate impedance varies depending on the frequency f2, the structure of the coupling coil 12, and the like.

  As a result, when power is supplied from the AC power supply 11, the impedance of the resonance coil for power transmission 13 is kept high and the Q value can be kept high by the function of the filter circuit 15b, so that power supply can be performed without reducing power supply efficiency. Can be done.

  On the other hand, when transmitting information from the communication unit 11, the frequency band of the information signal is set to a high band of several MHz or higher, and the impedance is low due to the function of the filter circuit 15b at a frequency other than the frequency f1. Become.

  In other words, the filter circuit 15b has a high impedance at the frequency f1, and otherwise the impedance is reduced. In this case, the Q value of the power transmission resonance coil 13 is lowered so that the information signal from the communication unit 14 can be transmitted satisfactorily.

  Thereby, first, the power supply source 1 can satisfactorily transmit a high-frequency information signal (display message) through the communication unit 11, the filter circuit 15b, and the power transmission resonance coil 13. After that, the AC power from the AC power source can be transmitted (powered) through the filter circuit 15a, the coupling coil 12, and the power transmitting resonance coil 13 without reducing the power feeding efficiency.

[Configuration Example of Moving Body 2A]
Next, a configuration example of the moving body 2A will be described. FIG. 8 is a diagram for explaining a configuration example of the moving body 2A according to the second embodiment. The mobile body 2A according to the second embodiment relays not only power but also an information signal (display message).

  As shown in FIG. 8, the moving body 2 </ b> A in this example includes a communication unit 25 and an operation unit 26 in addition to the relay resonance coil 21, the coupling coil 22, the rectifier circuit 23, and the drive motor unit 24. The communication unit 25 is connected to the relay resonance coil 21 so that the relay resonance coil 21 can also be used as a communication antenna.

  In the case of the mobile body 2 as well, as in the case of the power supply source 1 described above, if the communication unit 25 and the relay resonance coil 21 are simply connected, the impedance of the relay resonance coil 21 is reduced. As a result, the Q value of the relay resonance coil 21 is lowered and the power feeding efficiency is lowered.

  Therefore, also in the moving body 2A of the second embodiment, a filter circuit 27a is provided between the coupling coil 21 and the rectifier circuit 23, and a filter circuit 27b is provided between the communication unit 25 and the relay resonance coil 21. Is provided.

  As in the case of the power supply source 1 described above, the filter circuit 27b of the moving body 2A is designed to have a sufficiently high impedance so as not to lower the Q value of the relay resonance coil 21 at the frequency f1. . The filter circuit 27a of the moving body 2A is designed so as to have an appropriate impedance at the frequency f2 so that the coupling coil 22 does not affect wireless communication. Here, the appropriate impedance varies depending on the frequency f2, the structure of the coupling coil 22, and the like.

  Accordingly, when receiving power from the power supply source 1 and relaying it to the power supply destination, the impedance of the relay resonance coil 21 is kept high by the function of the filter circuit 27b, and the Q value can be maintained high. Power can be received and relayed (transmitted) without reducing power reception efficiency or power supply efficiency.

  On the other hand, when receiving information from the power supply source 1 or transmitting information from the communication unit 25, the frequency band of the information signal is set to a high band of several MHz or more. At times other than f1, the impedance is lowered by the function of the filter circuit 27b.

  That is, the filter circuit 27b has a high impedance at the frequency f1, and in other cases, the impedance is lowered. Therefore, in this case, the Q value of the relay resonance coil 21 is lowered so that information signals can be transmitted and received satisfactorily.

  Thereby, the moving body 2A first receives the information signal (display message) from the power supply source 1 through the relay resonance coil 21, the filter circuit 27b, and the communication unit 25. If necessary, the communication unit 25 adds the information input through the operation unit 26 to the received information signal, and passes the high-frequency information signal to the power supply destination 3 through the filter circuit 27b and the relay resonance coil 21. It can be transmitted well.

  After that, AC power from the power supply source 1 is received through the relay resonance coil 21 and supplied to the rectifier circuit 23 through the coupling coil 22 and the filter circuit 27a, where it is converted into DC power and driven. The motor unit 24 can be supplied. At the same time, the AC power from the power supply source 1 is relayed to the power supply destination 3 through the relay resonance coil 21 without reducing the power supply efficiency.

  The information input through the operation unit 26 is, for example, information such as a user name and a name, and thus. For example, it is possible to display a display message that is valid only for a user who is on the moving body 2A, such as “Mr. XX, □□ Shop is now on sale.” .

  When the display message is already set as the power supply destination, the mobile unit 2A uses the information such as the user name received through the operation unit 26 as information forming a part of the display message. It can also be transmitted to.

  That is, the mobile body 2A does not only relay the information signal from the power supply source 1. For example, only the information signal generated in the moving body 2A such as information received through the operation unit 26 is uniquely transmitted to the power supply destination 3 via the communication unit 25, the filter circuit 27b, and the relay resonance coil 21. It can also be sent.

[Configuration example of power supply destination 3]
Next, a configuration example of the power supply destination 3 will be described. FIG. 9 is a diagram for explaining a configuration example of the power supply destination 3 according to the second embodiment. The power supply destination 3 of the second embodiment receives not only power but also a display message relay through the moving body 2A.

  As shown in FIG. 9, the power supply destination 3 in this example includes a communication unit 35 in addition to a power receiving resonance coil 31, a coupling coil 32, a rectifier circuit 33, and an electric bulletin board 34 as a load circuit. The communication unit 35 is connected to the power receiving resonance coil 31 so that the power receiving resonance coil 31 can also be used as a communication antenna.

  In the case of the power supply destination 3 as well, as in the case of the power supply source 1 and the moving body 2A described above, if the communication unit 35 and the power reception resonance coil 31 are simply connected, the impedance of the power reception resonance coil 31 is reduced. This lowers the Q value of the power receiving resonance coil 31 and lowers the power receiving efficiency.

  Therefore, also in the power supply destination 3 of the second embodiment, a filter circuit 36 a is provided between the coupling coil 32 and the rectifier circuit 33, and a filter circuit 36 b is provided between the communication unit 35 and the power receiving resonance coil 31. Provided.

  As in the case of the power supply source 1 and the moving body 2A described above, the filter circuit 36b of the power supply destination 3 has a sufficiently high impedance so as not to lower the Q value of the power receiving resonance coil 31 at the frequency f1. Designed. Further, the filter circuit 36a of the power supply destination 3 is designed so as to have an appropriate impedance so that the coupling coil 32 does not affect the wireless communication at the frequency f2. Here, an appropriate impedance varies depending on the frequency f2, the structure of the coupling coil 32, and the like.

  Thus, when receiving power from the moving body 2A, the function of the filter circuit 36b keeps the impedance of the power receiving resonance coil 31 high, and the Q value can be maintained high, so that power can be received without reducing the power receiving efficiency. Can do.

  On the other hand, when receiving information from the mobile unit 2A, the frequency band of the information signal is set to a high band of several MHz or more, and the impedance is low due to the function of the filter circuit 36b at a frequency other than the frequency f1. Become.

  In other words, the filter circuit 36b has a high impedance at the frequency f1, and otherwise the impedance is reduced. Therefore, in this case, the Q value of the power receiving resonance coil 31 is lowered so that information signals can be transmitted and received satisfactorily.

  Thereby, first, the power supply destination 3 can satisfactorily receive the information signal (display message) from the power supply source 1 relayed by the moving body 2A through the power receiving resonance coil 31, the filter circuit 36b, and the communication unit 35. it can.

  The communication unit 35 extracts a display message from the received information signal, changes it to an information signal to be supplied to the electric bulletin board 34, and supplies this to the electric bulletin board 34, thereby sending the display message to the electric bulletin board 34. Can be displayed.

  After that, AC power from the power supply source 1 is received through the moving body 2A through the power receiving resonance coil 31, supplied to the rectifier circuit 33 through the coupling coil 32 and the filter circuit 36a, and converted into DC power here. This can be supplied to the electronic bulletin board 34.

  As a result, the display message from the power supply source 1 supplied via the mobile body 2A is supplied to the electronic bulletin board, and the electric bulletin board 34 is supplied by the power from the power supply source 1 supplied via the mobile body 2A. The display message can be displayed by driving.

[Effect of the second embodiment]
The magnetic resonance type non-contact power feeding system can be applied to a system that uses a passenger car that carries a person as a mobile relay device.

  Then, it is possible to provide necessary information to the user who has traveled on the moving body 2A as a passenger car at an appropriate timing, or to guide the user to a store or another attraction. .

[Modification of Second Embodiment]
In addition, in each apparatus demonstrated using FIGS. 7-9, although the impedance adjustment was performed using the filter circuit, it is not restricted to this. For example, a switch circuit may be provided instead of the filter circuit.

  For example, in the case of the power supply source 1 shown in FIG. 7, a switch circuit 16 a is provided between the filter circuit 15 b, that is, between the communication unit 14 and the power transmission resonance coil 13. Further, a switch circuit 16 a is provided between the filter circuit 15 a, that is, between the AC power supply 11 and the coupling coil 12.

  During power feeding, the switch circuit 16a is turned on and the switch circuit 16b is turned off. Thereby, the impedance of the power transmission resonance coil 13 is kept high, and the power from the AC power source can be efficiently fed.

  In communication, the information signal from the communication unit 14 can be appropriately transmitted through the power transmission resonance coil 13 by turning off the switch circuit 16a and turning on the switch circuit 16b.

  In this manner, a switch circuit may be provided instead of the filter circuit, and this may be switched between power feeding and communication. Similarly, in the mobile body 2A and the power supply destination 3, a switch circuit may be provided in the communication system and the power supply system, and this may be switched between communication and power supply (power reception).

  In the example described with reference to FIGS. 7 to 9, the power transmission resonance coil 13, the relay resonance coil 21, and the power reception resonance coil 31 are also used as communication antennas, and power supply and information signal supply can be performed as much as possible. The same route was used.

  However, it is not limited to this. Information signals can be transmitted with relatively low power and a large amount of information can be transmitted at high speed. Therefore, it is of course possible to provide a dedicated antenna for communication.

  That is, in the case of the power supply source 1 illustrated in FIG. 7, the connection destination of the communication unit 14 is connected to a newly provided communication antenna instead of the power transmission resonance coil 13. In the case of the moving body 2A shown in FIG. 8, the communication unit 25 is connected to a newly provided communication antenna instead of the relay resonance coil 21. In the case of the power supply destination 3 illustrated in FIG. 9, the communication unit 35 is connected to a newly provided communication antenna instead of the power receiving resonance coil 31.

  By doing so, the communication system and the power feeding system may be separated, and the transmission and reception of information signals and the transmission and reception of power may be performed separately and independently. In this case, since transmission / reception of information signals and transmission / reception of power can be performed at the same time, there is an effect that control of transmission / reception of information signals is facilitated.

  Moreover, in the case of the non-contact electric power feeding system of 2nd Embodiment, although 2 A of mobile bodies also received supply of electric power from the electric power supply source 1, it does not restrict to this. For example, a driving battery is mounted on the moving body 2A, and the vehicle itself is driven by electric power from the driving battery.

  Then, the moving body 2A may be provided with an AC power supply, and the power (AC power) generated in the moving body 2A may be supplied to the power supply destination. That is, the mobile body 2 </ b> A can have a function as the power supply source 1.

[Application to the method of the present invention]
The non-contact power feeding method in the non-contact power feeding system described with reference to FIGS. 1 to 9 is one of the non-contact power feeding methods according to the present invention. Moreover, the non-contact power feeding method in the moving bodies 2 and 2A described with reference to FIGS. 3 and 8 is one non-contact power feeding method according to the present invention. Further, the non-contact power supply method at the power supply destination described with reference to FIGS. 4 and 9 is one non-contact power supply method according to the present invention.

[Others]
In the above-described embodiment, the moving bodies 2 and 2A have been described as being of an automobile type or a passenger car. However, the present invention is not limited to this. It is possible to configure and use various types of moving bodies such as a ship type that moves on the water, an airplane type that flies in the air, and an elevator type that moves up and down.

  In the above-described embodiment, the power supply destination is described as using a light emitting element such as an LED or an electric bulletin board, or a display element. However, the present invention is not limited to this. As a power supply destination load circuit that receives power supply from a mobile body, various circuits such as a sound generation / sound emission circuit, a vibration circuit, and a photograph photographing circuit can be used.

  In the above-described embodiment, the case where power is supplied in a non-contact manner by the magnetic field resonance method has been described as an example. However, not only the magnetic field resonance method but also the electric field resonance method and the electromagnetic resonance method are used in a non-contact manner. The present invention can be similarly applied even when power is supplied.

  In the embodiment described above, a coupling coil (coupling element) is provided between the AC power source and the power transmission resonance coil for the power supply source. In the moving body, a coupling coil (coupling element) is provided between the relay resonance coil and the rectifier circuit. In addition, for the power supply destination, a coupling coil (coupling element) was provided between the power receiving resonance coil and the rectifier circuit.

  However, the present invention is not limited to this, and if the problem of power reflection and impedance can be adjusted, the above-described coupling coil (coupling element) can be configured not to be used.

  DESCRIPTION OF SYMBOLS 1 ... Power supply source, 11 ... AC power supply, 12 ... Coupling coil, 13 ... Resonance coil for power transmission, 2, 2A ... Moving body, 21 ... Resonance coil for relay, 22 ... Coupling coil, 23 ... Rectifier circuit, 24 ... Drive motor 3, power feeding destination, 31 ... power receiving resonance coil, 32 ... coupling coil, 33 ... rectifier circuit, 34 ... additional circuit, 341 ... LED drive circuit, 342 ... LED, 4 ... mounting table, 5 ... circular guide plate, 14 , 25, 35 ... communication part, 26 ... operation part, 34 ... electric bulletin board, 15a, 15b ... filter circuit, 27a, 27b ... filter circuit, 36a, 36b ... filter circuit,

Claims (14)

  1. A power supply resonance element for supplying AC power to an electronic device in a contactless manner by resonance;
    An AC power supply unit that generates AC power having a frequency corresponding to a resonance frequency of the resonance element for power supply and supplies the AC power to the resonance element for power supply;
    A relay resonance element that receives supply of AC power in a contactless manner by resonance from the resonance element of the contactless power feeding device, and relays the AC power to other electronic devices in a contactless manner by resonance;
    A relay-side rectifier circuit that forms and outputs DC power from AC power from the relay excitation element;
    A non-contact relay device that is driven by DC power from the relay-side rectifier circuit and includes a moving means that moves the own device;
    A power receiving resonant element that is supplied with AC power in a non-contact manner by magnetic field resonance from the relay resonant element of the non-contact relay device;
    A power receiving side rectifier circuit that forms and outputs DC power from AC power from the power receiving resonant element;
    A non-contact power feeding system comprising one or more non-contact power receiving devices including load means driven by DC power from the power receiving side rectifier circuit.
  2. The contactless power supply system according to claim 1,
    In the non-contact power supply device, AC power is supplied from the AC power supply unit between the AC power supply unit and the power supply resonance element, and this is supplied to the power supply resonance element by electromagnetic induction. Provide a power supply side coupling element,
    In the non-contact relay device, a relay-side coupling element that receives AC power from the relay resonance element by electromagnetic induction between the relay resonance element and the rectifier circuit and supplies the AC power to the rectifier circuit Provided,
    In the non-contact power receiving device, AC power is supplied from the power receiving resonant element by electromagnetic induction between the power receiving resonant element and the power receiving rectifier circuit, and the AC power is supplied to the power receiving rectifier circuit. A non-contact power feeding system comprising a power receiving side coupling element.
  3. It is a non-contact electric power feeding system according to claim 1 or 2,
    The non-contact power feeding device includes information transmission means,
    The contactless relay device includes information reception and transmission means for receiving information from the contactless power feeding device and transmitting the information to the contactless power receiving device,
    The load means of the non-contact power receiving device is a display means,
    The non-contact power receiving device is:
    Information receiving means;
    A non-contact power feeding system comprising: display control means for displaying the information received by the receiving means on the display means.
  4. It is a non-contact electric power feeding system according to claim 1 or 2,
    The non-contact relay device is:
    An accepting means for accepting input of information;
    Transmission means for transmitting information received through the reception means,
    The load means of the non-contact power receiving device is a display means,
    The non-contact power receiving device is:
    Information receiving means;
    A non-contact power feeding system comprising: display control means for displaying the information received by the receiving means on the display means.
  5. A relay resonance element that receives supply of AC power in a contactless manner by resonance from the resonance element of the contactless power feeding device, and relays the AC power to other electronic devices in a contactless manner by resonance;
    A relay-side rectifier circuit that forms and outputs DC power from AC power from the relay excitation element;
    A non-contact relay device comprising: moving means that is driven by DC power from the relay-side rectifier circuit and moves the own device.
  6. The contactless relay device according to claim 5,
    Non-contact relay device provided with a relay-side coupling element that receives AC power from the relay resonance element by electromagnetic induction and supplies the AC power to the rectifier circuit between the relay resonance element and the rectifier circuit .
  7. The contactless relay device according to claim 5 or 6,
    A contactless relay device comprising information reception and transmission means for receiving information from the contactless power feeding device and transmitting the information to the contactless power receiving device.
  8. The contactless relay device according to claim 5 or 6,
    An accepting means for accepting input of information;
    A non-contact relay apparatus comprising: a transmission unit that transmits information received through the reception unit.
  9. A power receiving resonance element that is supplied with AC power in a non-contact manner by magnetic field resonance from a relay resonance element of a contactless power receiving relay apparatus having a moving configuration;
    A power receiving side rectifier circuit that forms and outputs DC power from AC power from the power receiving resonant element;
    One or more non-contact power receiving devices, comprising: load means driven by direct current power from the power receiving side rectifier circuit.
  10. The contactless power receiving device according to claim 9,
    A power receiving side coupling element is provided between the power receiving resonant element and the power receiving side rectifier circuit that receives AC power from the power receiving resonant element by electromagnetic induction and supplies the AC power to the power receiving side rectifier circuit. Non-contact power receiving device.
  11. The contactless power receiving device according to claim 9 or 10,
    The load means is a display means,
    Information receiving means;
    A non-contact power receiving apparatus comprising: display control means for displaying the information received by the receiving means on the display means.
  12. A first power transmission step in which the first device transmits AC power through a power transmission resonance coil in a resonant manner;
    The second device receives the AC power transmitted from the first device through the power transmission / reception resonance coil that resonates at the same frequency as or substantially the same frequency as the power transmission resonance coil of the first device. A first power receiving step;
    A relay step in which the second device transmits power through the power receiving and transmitting resonance coil so as to relay the AC power received in the first power receiving step;
    A moving step in which the second device moves the device using the AC power received in the first power receiving step;
    When the third device approaches the own device, the third device passes through the power receiving resonance coil that resonates at the same frequency as the power receiving / transmitting resonance coil of the second device or substantially the same frequency. A second power receiving step for receiving AC power transmitted from the second device;
    A non-contact power feeding method in a non-contact power feeding system, wherein the third device comprises a driving step of driving a predetermined load circuit using the AC power received in the second power receiving step
  13. A power receiving step of receiving AC power transmitted from the non-contact power feeding device through a power receiving and transmitting resonance coil that resonates at the same frequency as the power transmission resonance coil of the non-contact power feeding device or substantially the same frequency;
    A non-contact relay device comprising: a relay step of transmitting the AC power received in the power receiving step through the power receiving and transmitting resonance coil so as to relay; and a moving step of moving the own device using the AC power received in the power receiving step Non-contact power feeding method.
  14. When the non-contact power receiving relay device having a moving configuration approaches the own device, the power receiving resonance coil that resonates at the same frequency as the power receiving / resonating resonance coil of the non-contact power receiving relay device, or substantially the same frequency, A power receiving step of receiving AC power transmitted from the non-contact power receiving relay device;
    A non-contact power feeding method in a non-contact power receiving apparatus comprising: a driving step of driving a predetermined load circuit using the AC power received in the power receiving step
JP2009171797A 2009-07-23 2009-07-23 Non-contact power feeding system, non-contact relay device, non-contact power receiving device, and non-contact power feeding method Active JP5387201B2 (en)

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Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5640515B2 (en) 2010-07-15 2014-12-17 ソニー株式会社 Power transmission relay device, power transmission device, and method of manufacturing power transmission relay device
US20120086285A1 (en) * 2010-10-08 2012-04-12 Electronics And Telecommunications Research Institute Apparatus for harvesting energy from electromagnetic field
JP5732870B2 (en) * 2011-01-25 2015-06-10 株式会社明電舎 Non-contact power supply apparatus and non-contact power supply method
JP5640800B2 (en) 2011-02-21 2014-12-17 ソニー株式会社 Wireless power supply apparatus and wireless power supply method
JP5677875B2 (en) * 2011-03-16 2015-02-25 日立マクセル株式会社 Non-contact power transmission system
US10176920B2 (en) 2011-03-31 2019-01-08 Sekisui Chemical Co., Ltd. Building and construction method for the same
EP2695277B1 (en) * 2011-04-08 2015-08-05 Access Business Group International LLC Counter wound inductive power supply
US9272630B2 (en) 2011-05-27 2016-03-01 Samsung Electronics Co., Ltd. Electronic device and method for transmitting and receiving wireless power
US9000620B2 (en) 2011-05-31 2015-04-07 Samsung Electronics Co., Ltd. Apparatus and method of dividing wireless power in wireless resonant power transmission system
WO2013005415A1 (en) * 2011-07-04 2013-01-10 日本電気株式会社 Wireless power transmission device and method, and relay
JP6071301B2 (en) * 2011-07-29 2017-02-01 アールエフ・アンテナ株式会社 Non-contact information communication system
US9641027B2 (en) 2011-09-21 2017-05-02 Nec Corporation Wireless power feeding system and wireless power feeding method
JP5801154B2 (en) * 2011-10-07 2015-10-28 日立マクセル株式会社 Non-contact power transmission apparatus and non-contact power transmission method
JP2013118734A (en) * 2011-12-01 2013-06-13 Panasonic Corp Non-contact electric power transmission apparatus
EP2631923B1 (en) * 2012-02-23 2014-06-04 TE Connectivity Nederland B.V. Wireless power connector and wireless power connector system
KR101988009B1 (en) 2012-03-23 2019-06-11 삼성전자주식회사 Wireless power transmission system and method that controls resonance frequency and increases coupling efficiency
JP5849865B2 (en) * 2012-06-13 2016-02-03 トヨタ自動車株式会社 Power supply system, power supply device, in-vehicle device, power supply method, advertisement distribution system
JP5965741B2 (en) * 2012-06-26 2016-08-10 オリンパス株式会社 Medical wireless power supply system
WO2014038148A1 (en) 2012-09-06 2014-03-13 パナソニック 株式会社 Contactless power supply system and contactless extension plug
JP2014073048A (en) * 2012-10-01 2014-04-21 Olympus Corp Medical instrument, and medical wireless power supply system
CN103219781A (en) * 2013-04-18 2013-07-24 苏州源辉电气有限公司 Multi-load wireless charging system used in leisure entertainment venue
KR102055866B1 (en) * 2013-05-03 2019-12-13 삼성전자주식회사 Wireless power transmitter, wireless power receiver and method for controlling each thereof
JP5459746B1 (en) * 2013-06-24 2014-04-02 敏雄 増山 Non-contact power supply system and diorama using the same
JP6095507B2 (en) 2013-06-28 2017-03-15 オリンパス株式会社 Endoscope system
JP6109308B2 (en) 2013-06-28 2017-04-05 オリンパス株式会社 Endoscope system
CN105358036B (en) 2013-06-28 2017-09-19 奥林巴斯株式会社 Endoscopic system
JP2015231306A (en) * 2014-06-06 2015-12-21 トヨタ自動車株式会社 Non-contact power reception device
US9991048B2 (en) 2014-06-24 2018-06-05 The Board Of Trustees Of The University Of Alabama Wireless power transfer systems and methods
KR101735483B1 (en) * 2014-07-30 2017-05-24 경북대학교 산학협력단 Energy harvesting device using thermoelectric element, system and method thereof
CN104234474A (en) * 2014-08-29 2014-12-24 陈业军 Parking shed with multidirectional wireless charging function
US10110018B2 (en) 2014-12-23 2018-10-23 Intel Corporation Wireless power repeating
US20160181851A1 (en) * 2014-12-23 2016-06-23 Intel Corporation Wireless power transmitting coil disposed around a protruding magnetic component
CN104998420A (en) * 2015-07-27 2015-10-28 东南大学 Rail transport electronic toy train employing sectional switch-type wireless power supply

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11220813A (en) * 1998-02-02 1999-08-10 Harness Syst Tech Res Ltd Power supply device for charging electric vehicle and relay connector for charging electric vehicle
JP3593506B2 (en) * 2001-04-11 2004-11-24 コナミ株式会社 Game device with self-propelled body
EP1902505A2 (en) * 2005-07-12 2008-03-26 Massachusetts Institute of Technology (MIT) Wireless non-radiative energy transfer
JP4453741B2 (en) * 2007-10-25 2010-04-21 トヨタ自動車株式会社 Electric vehicle and vehicle power supply device
TWI361540B (en) * 2007-12-14 2012-04-01 Darfon Electronics Corp Energy transferring system and method thereof
US20120119698A1 (en) * 2008-09-27 2012-05-17 Aristeidis Karalis Wireless energy transfer for vehicles
JP5437650B2 (en) * 2009-01-30 2014-03-12 昭和飛行機工業株式会社 Non-contact power feeding device

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